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Combined Land Suitability Class


Citation Information

Title: Combined Land Suitability Classes

Source: IIASA Global Agro-Ecological Zones (GAEZ).

Date: 2001

Citation: Global Agro-Ecological Zones (GAEZ). 2011b. Agro-Climatic Constraints. [online] URL: http://www.fao.org/nr/gaez/about-data-portal/agricultural-suitability-and-potential-yields/en/. Accessed June 6, 2011.


Global grid of land suitability for agriculture based on combined climate, soil, and slope constrains constraints. Native resolution is 5 arc minute projected in Geographic Coordinate System WGS 1984.

Combined land suitability classes:

0 NoData/Water
2 No Constraints
3 Very Few Constraints
4 Few Constraints
5 Partly with Constraints
6 Frequent Severe Constraints
7 Very Frequent Severe Constraints
8 Unsuitable for Agriculture
9 Severe Climate Constraints

Processing Procedure

1. In ArcMap 10.0, convert native data to 30 arc second resolution.

2. Reclassify into numerical classes.

3. Use zonal statistics to calculate mean values within each GLU.

Data Coverage

Data is coded by the number of cells covered by the native data (1), data extrapolation (2), and not covered by either (3).

DGG Cell Coverage Report
 Coverage Codes Frequency Percent Valid Percent Cumulative Percent
Valid 1 1371209 94.9 94.9 94.9
3 73755 5.1 5.1 100.0
Total 1444964 100.0 100.0
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